Micropterus salmoides fry breeding device and application thereof

Abstract

The invention discloses a largemouth micropterus salmoides fry breeding device and application thereof. The largemouth micropterus salmoides fry breeding device comprises a feed domestication feeding unit and a fry breeding unit. Wherein the feed domestication feeding unit comprises at least one round pond, a breeding frame and a re-feeding device are arranged in the round pond, the breeding frame is a spherical combined frame and is externally connected with a lifter, a part of structure of the re-feeding device is embedded into the breeding frame, and a blow-off pipe is arranged at the bottom of the round pond; each fry breeding unit comprises a cement pool, a net cage frame and a net cage, each net cage frame is of a combined structure of two semi-cylinders, the circle center of the bottom face of each frame is rotationally connected with a pool ridge of the corresponding cement pool, and the semi-cylinders are sleeved with the net cages. The artificial feed fry domestication device has the advantages that (1) bait is saved by arranging the re-feeding device in the breeding frame, and the artificial feed fry domestication efficiency is improved; fry screening is convenient, fry damage in the screening process is reduced, and labor intensity is greatly reduced; and (3) dirt cleaning is convenient, the seedling cultivation and production efficiency is improved, and the survival rate of the seedlings is also remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of largemouth black bass seedling selection and breeding, and relates to a method for artificial feed domestication, segmented feeding and management of largemouth black bass seedlings, and improved seed breeding, and specifically is a largemouth black bass seedling selection and breeding device and application thereof. Background Art

[0002] The rapid development of largemouth bass farming in my country has benefited from the application of artificial feeds. Its growth and cultivation process includes opening cultivation, feed domestication cultivation, seedling standardization and adult fish cultivation. At present, the artificial breeding technology of largemouth bass has been successful, and the problem of opening of water splash fish fry has also been solved. However, the conversion of fry from animal feed to artificial feed and large-scale cultivation are two key factors. The average survival rate of 10-centimeter fish is about 15%, which limits the further improvement of farming benefits. Largemouth bass are fed with frozen cladocerans or micro-granular feeds about one week after opening. Because the fry have predatory characteristics, the time between two feedings is long, which easily causes the feed to sink to the bottom and uneven feeding (micro-granular feeds and frozen cladocerans are both bottom-sinking feeds). Therefore, the feeding time is long, and the feed that sinks to the bottom is no longer ingested, which causes a large workload and feed waste for feeding, and the effect is not ideal. After the feed is converted, there are about 3,000 seedlings per kilogram. At this time, due to their nature or uneven growth, it is easy for the big ones to eat the small ones, so they need to be screened with a fish screen every three days to ensure that the seedlings of the same specifications are raised together. When screening the seedlings, it is necessary to drain the pond water, pull the net to catch the seedlings, and screen them manually, which requires the cooperation of many people. Because the process of screening the fry is relatively complicated, the current production method and labor intensity are high and inefficient, and it is also easy to cause the fish to be injured and infected with bacteria, which seriously affects the survival rate and quality of the seedlings. Summary of the invention

[0003] Technical problem to be solved: In order to overcome the shortcomings of the prior art, namely, the low survival rate and difficulty in screening largemouth black bass seedlings during artificial feed domestication and large-scale cultivation, the present invention provides a largemouth black bass seedling selection and breeding device and its application in order to reduce damage to the seedlings and improve screening and feeding efficiency and seedling survival rate.

[0004] Technical solution: A largemouth black bass seedling breeding device, the device comprising a feed acclimation and feeding unit and a seedling cultivation unit; wherein the feed acclimation and feeding unit comprises at least one circular pool, in which a breeding frame and a re-feeding device are arranged, the breeding frame is a spherical combination frame and is externally connected to a lifter, a partial structure of the re-feeding device is embedded in the breeding frame, and a sewage pipe is arranged at the bottom of the circular pool; the seedling cultivation unit comprises a cement pool, a cage frame and a cage, the cage frame is a combination structure of two semi-cylinders, the bottom surface of the frame is rotatably connected to the ridge of the cement pool at the center of the circle, and the cage is sleeved on the semi-cylinder.

[0005] Preferably, the breeding frame includes a fish sieve, an upper frame, and a lower frame from top to bottom. Fixed ring pieces are provided at the contact edges between the three, and fixing holes are evenly opened on the ring pieces and connected by fixing bolts; the mesh holes of the fish sieve are larger than those of the upper frame and the lower frame.

[0006] Preferably, a coaxial shaft is provided on the fixed ring piece between the upper frame and the lower frame, and the coaxial shaft is used to connect the elevator; the elevator includes two fixed piles, a rotating shaft is provided between the fixed piles, pull rings are evenly arranged on the rotating shaft, and a carrying rod is connected to the pull rings for connecting with the coaxial shaft. The elevator controls the rotation of the rotating shaft through motor A.

[0007] Preferably, the fixing bolt includes a head, a spring piece, and a tail, and the spring piece is clamped in the fixing hole.

[0008] Preferably, the re-feeding device successively includes a base, a feeding funnel, a horn pipe A, a pump pipe, a horn pipe B, a long pipe, and a flared opening from bottom to top. The part above the feeding funnel is embedded in the breeding frame; at least two small columns are used to support and connect between the base and the horn pipe A to form a water inlet slit; the lower edge of the feeding funnel fits with the upper edge of the base; a ring piece is provided between the horn pipe B and the long pipe, and a lamp tube is provided on the ring piece.

[0009] Preferably, a spiral piece is provided in the pump pipe, a motor is provided in the base, and a magnetic rod penetrates through the base and the horn pipe A and is driven by the motor.

[0010] Preferably, waist shaft grooves are evenly arranged on the pool embankment of the cement pool; the net cage frame includes two semi-cylindrical structures formed by frame rods and a frame waist that is recessed inward between the two. A waist shaft is provided in the middle of the frame waist at the bottom surface, and the waist shaft is rotatably connected to the waist shaft groove.

[0011] Preferably, the net cage includes a main rein and a deputy rein. Among them, the deputy reins are interlaced with each other to form a semi-cylindrical net structure, and small holes are left in the deputy reins at the edge for the main rein to pass through; the main rein surrounds the frame waist for one week to fix the net cage on the net cage frame.

[0012] Application of any of the above-mentioned devices in the artificial feed domestication and cultivation and seedling screening of Micropterus salmoides.

[0013] Preferably, the application includes the following steps:

[0014] S1. Stock the fry of Micropterus salmoides in each breeding frame. In the early stage of domestication, the breeding frame is only composed of the upper frame and the lower frame. In the later stage of domestication, a fish sieve is installed on the breeding frame to form a spherical net, which rotates to facilitate the small fry to swim out and prevent the large fry from eating the small fry; and it plays a role in sorting the seedlings. The small fry that swim out are collected with a net cage.

[0015] S2. Adopt the method of combining manual feeding with a re-feeding device to feed artificial feed into the breeding frame. When using the re-feeding device, start the motor in the base to drive the magnetic rod in the base and the horn tube A, drive the water body in the horn tube A to rotate. The rotating water body is lifted by the spiral blade in the pump tube, so that the water body at the bottom of the receiving hopper continuously sprays out from the horn mouth. When feeding, use the manual feeding method to feed the feed above the re-feeding device. When the feed falls, part of the feed is eaten by the fry, and the part that is not eaten is collected and lifted by the receiving hopper, and then sprays out from the horn mouth, repeating until it is eaten by the fry. When feeding, turn on the lamp tube so that the feed particles reflect light and are easy to be eaten by the fry;

[0016] S3. After feeding is completed, turn on the motor A to start the rotating shaft, and the breeding frame moves upward so that the upper frame is higher than the water surface, increasing the fry density. Under the condition of high density, the activity of the fry increases, which is convenient for digestion. At the same time, the space between the fry is limited, and the mutual attack behavior decreases. In addition, manually pull up the breeding frame through the pull ring to adjust the fry density in individual breeding frames;

[0017] S4. After successfully domesticating the artificial feed for Micropterus salmoides fry through steps S1 - S3, use a net cage to collect the fry. Pass the main reins of the net cage through the small holes of the secondary reins and then wind around the waist of the frame to fix the net cage on the net cage frame. Then, snap the waist shaft into the waist shaft groove to facilitate the rotation of the net cage in the cement pool. During breeding, generally only set the net cage on the net cage frame under the water surface. After breeding for a period of time, the water permeability of the net cage becomes poor, then set the net cage on the net cage frame above the water surface, rotate the net cage frame to make the clean net cage turn under the water surface, and the fry will enter the new net cage with the water, and remove the old net cage. After cyclic operation until the required fry specifications are cultivated.

[0018] In addition, the fry cultivated through S4 can be returned to the breeding frame as needed, and the small - sized fry can be made to swim out by rotating the breeding frame, so as to screen out the large - sized fry.

[0019] Beneficial effects: (1) The Micropterus salmoides fry selection and breeding device of the present invention saves bait by setting a re - feeding device in the breeding frame, and improves the domestication efficiency of artificial feed fry; (2) The fry screening of the device is convenient, reduces fry damage during the screening process, and greatly reduces the labor intensity; (3) The device is convenient for sewage cleaning, improves the fry cultivation and production efficiency, and significantly improves the fry survival rate. Description of the Drawings

[0020] Figure 1 is the overall structural schematic diagram of the feed domestication and feeding unit of the present invention;

[0021] Figure 2 is the structural schematic diagram of the breeding frame;

[0022] Figure 3 is the structural schematic diagram of the upper frame of the breeding frame;

[0023] Figure 4 It is a schematic diagram of the lower frame structure of the breeding frame;

[0024] Figure 5 It is a schematic diagram of the fish sieve structure;

[0025] Figure 6 It is a schematic diagram of the fixing bolt structure;

[0026] Figure 7 It is a schematic diagram of the circular pond structure;

[0027] Figure 8 It is a schematic diagram of the re-injector structure;

[0028] Figure 9 It is a schematic diagram of the pump pipe structure;

[0029] Figure 10 It is a schematic diagram of the overall structure of the fry cultivation unit described in the present invention;

[0030] Figure 11 It is a schematic diagram of the cage frame structure;

[0031] Figure 12 It is a schematic diagram of the cement pond structure;

[0032] Figure 13 It is a schematic diagram of the cage structure;

[0033] Among them, 1 is the circular pond, 2 is the breeding frame, 3 is the crossbar, 4 is the pull ring, 5 is the rotating shaft, 6 is the fixed pile, 7 is the motor A, 8 is the coaxial shaft, 9 is the fixed ring plate, 10 is the fixing hole, 11 is the head, 12 is the elastic piece, 13 is the tail, 14 is the sewage pipe, 15 is the bell mouth, 16 is the long pipe, 17 is the bell pipe B, 18 is the pump pipe, 19 is the bell pipe A, 20 is the base, 21 is the water inlet slit, 22 is the receiving funnel, 23 is the ring plate, 24 is the lamp tube, 25 is the spiral piece, 26 is the cement pond, 27 is the cage frame, 28 is the cage, 29 is the frame rod, 30 is the frame waist, 31 is the waist shaft, 32 is the waist shaft groove, 33 is the main reins. Detailed implementation manners

[0034] The following embodiments further illustrate the content of the present invention, but should not be construed as limiting the present invention. Without departing from the spirit and essence of the present invention, the modifications and substitutions made to the methods, steps or conditions of the present invention all belong to the scope of the present invention. If not specifically specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0035] Embodiment 1

[0036] Micropterus salmoides fry breeding device, the device includes a feed domestication and feeding unit and a fry cultivation unit; wherein, the feed domestication and feeding unit includes at least 1 circular pond 1, in which there is a breeding frame 2 and a re-feeding device. The breeding frame 2 is a spherical combined frame and is externally connected to a lifter. Part of the structure of the re-feeding device is embedded in the breeding frame 2, and a sewage pipe 14 is arranged at the bottom of the circular pond 1; the fry cultivation unit includes a cement pond 26, a net cage frame 27 and a net cage 28. The net cage frame 27 is a combined structure of two semi-cylinders, and the center of the bottom surface of the frame is rotationally connected to the bank of the cement pond 26, and the net cage 28 is sleeved on the semi-cylinder.

[0037] The breeding frame 2 includes a fish sieve, an upper frame and a lower frame from top to bottom. Fixed ring pieces 9 are arranged at the contact edges between the three, and fixing holes 10 are evenly opened on the ring pieces and are connected by fixing bolts; the mesh holes of the fish sieve are larger than those of the upper frame and the lower frame.

[0038] A coaxial shaft 8 is arranged on the fixed ring piece 9 between the upper frame and the lower frame, and the coaxial shaft 8 is used to connect the lifter; the lifter includes two fixed piles 6, a rotating shaft 5 is arranged between the fixed piles 6, pull rings 4 are evenly arranged on the rotating shaft 5, and a carrying rod 3 is connected to the pull ring 4 for connecting with the coaxial shaft 8. The lifter controls the rotation of the rotating shaft 5 through a motor A 7.

[0039] The fixing bolt includes a head 11, a spring piece 12 and a tail 13, wherein the spring piece 12 is clamped in the fixing hole 10.

[0040] The re-feeding device successively includes a base 20, a receiving hopper 22, a trumpet tube A 19, a pump tube 18, a trumpet tube B 17, a long tube 16 and a trumpet mouth 15 from bottom to top. Among them, the part above the receiving hopper 22 is embedded in the breeding frame 2; at least two small columns are used to support and connect between the base 20 and the trumpet tube A 19 to form a water inlet gap 21; the lower edge of the receiving hopper 22 fits with the upper edge of the base 20; a ring piece 23 is arranged between the trumpet tube B 17 and the long tube 16, and a lamp tube 24 is arranged on the ring piece 23.

[0041] A spiral piece 25 is arranged in the pump tube 18, a motor is arranged in the base 20, and a magnetic rod penetrates through the base 20 and the trumpet tube A 19 and is driven by the motor.

[0042] Waist shaft grooves 32 are evenly arranged on the bank of the cement pond 26; the net cage frame 27 includes two semi-cylindrical structures formed by frame rods 29 and a frame waist 30 that is recessed inward between the two. A waist shaft 31 is arranged in the middle of the frame waist 30 at the bottom surface, and the waist shaft 31 is rotationally connected to the waist shaft groove 32.

[0043] The net cage 28 includes a main rein 33 and auxiliary reins. Among them, the auxiliary reins are interspersed with each other to form a semi-cylindrical net structure, and small holes are left in the auxiliary reins at the edge for the main rein 33 to pass through; the main rein 33 surrounds the frame waist 30 for one week to fix the net cage 28 on the net cage frame 27.

[0044] Example 2

[0045] The device of Example 1 was used for the artificial feed domestication and cultivation of Micropterus salmoides and the screening of fry. The specific application method was as follows:

[0046] S1. The fry of Micropterus salmoides were stocked in each culture frame 2. In the early stage of domestication, the culture frame 2 only consisted of an upper frame and a lower frame. In the later stage of domestication, a fish sieve was installed on the culture frame 2 to form a spherical net, which rotated to facilitate the small fry to swim out and prevent the large fry from eating the small fry; and it played a role in sorting the fry. The small fry that swam out were collected by the net cage 28;

[0047] S2. An artificial feed was fed into the culture frame 2 by a method combining manual feeding and a re-feeding device. When using the re-feeding device, the motor in the base 20 was started to drive the magnetic rod in the base 20 and the horn tube A19, driving the water body in the horn tube A19 to rotate. The rotating water body was lifted by the spiral piece 25 in the pump tube 18, so that the water body at the bottom of the receiving hopper 22 continuously spouted from the horn mouth 15; when feeding, the feed was fed above the re-feeding device in a manual feeding manner. When the feed fell, part of the feed was eaten by the fry, and the part that was not eaten was collected and lifted by the receiving hopper 22, and then spouted from the horn mouth 15, and the cycle was repeated until it was eaten by the fry; when feeding, the lamp tube 24 was turned on to make the feed particles reflect light and be easily eaten by the fry;

[0048] S3. After the feeding was completed, the motor A 7 was turned on to start the rotating shaft 5, and the culture frame 2 was lifted so that the upper frame was higher than the water surface, increasing the fry density. Under the condition of high density, the activity of the fry increased, which was convenient for digestion. At the same time, the space between the fry was limited, and the mutual attack behavior decreased; in addition, the culture frame 2 was manually pulled up by the pull ring 4 to adjust the fry density in individual culture frames 2;

[0049] S4. After the artificial feed of Micropterus salmoides fry was successfully domesticated through steps S1 - S3, the fry were collected by the net cage 28. The main reins 33 of the net cage 28 were passed through the small holes of the secondary reins and then wound around the frame waist 30 for one week to fix the net cage 28 on the net cage frame 27. Then, the waist shaft 31 was clamped into the waist shaft groove 32 to facilitate the rotation of the net cage 28 in the cement pool 26; during cultivation, generally only the net cage 28 was sleeved on the net cage frame 27 under the water surface. After cultivating for a period of time, the water permeability of the net cage 28 became poor, then the net cage 28 was sleeved on the net cage frame 27 above the water surface, and the net cage frame 27 was rotated to make the clean net cage 28 turn under the water surface. The fry would enter the new net cage 28 with the water, and the old net cage 28 was removed; after cyclic operation until the required fish species specifications were cultivated.

[0050] Example 3

[0051] The difference from Example 2 is as follows: The fish species after being cultivated in S4 are returned to the culture frame 2, and the small-sized fish species are allowed to swim out from the fish sieve by rotating the culture frame 2, so as to screen out the large-sized fish species. The large-sized fish species are used for the subsequent production and cultivation of Micropterus salmoides.

Claims

1. A fry selection device for largemouth bass, characterized in that The device includes a feed domestication and feeding unit and a fry cultivation unit; among them, the feed domestication and feeding unit includes at least one circular pond (1), in which there is a breeding frame (2) and a re-feeding device. The breeding frame (2) is a spherical combined frame and is externally connected to a lifter. Part of the structure of the re-feeding device is embedded in the breeding frame (2), and a sewage pipe (14) is provided at the bottom of the circular pond (1); the fry cultivation unit includes a cement pond (26), a net cage frame (27) and a net cage (28). The net cage frame (27) is a combined structure of two semi-cylinders, and the center of the bottom surface of the frame is rotatably connected to the ridge of the cement pond (26), and the net cage (28) is sleeved on the semi-cylinder.

2. The largemouth bass fry breeding device according to claim 1, characterized in that, The breeding frame (2) includes a fish sieve, an upper frame and a lower frame from top to bottom. Fixed ring pieces (9) are provided at the contact edges between the three, and fixing holes (10) are evenly opened on the ring pieces and are connected by fixing bolts; the mesh holes of the fish sieve are larger than those of the upper frame and the lower frame.

3. The largemouth bass fry breeding device according to claim 2, characterized in that, A coaxial shaft (8) is provided on the fixed ring piece (9) between the upper frame and the lower frame. The coaxial shaft (8) is used to connect the lifter; the lifter includes two fixed piles (6), a rotating shaft (5) is provided between the fixed piles (6), pull rings (4) are evenly arranged on the rotating shaft (5), and a carrying rod (3) is connected to the pull ring (4) for connecting with the coaxial shaft (8). The lifter controls the rotation of the rotating shaft (5) through a motor A (7).

4. The largemouth bass fry breeding device according to claim 2, wherein, The fixing bolt includes a head (11), a spring piece (12) and a tail (13), wherein the spring piece (12) is clamped in the fixing hole (10).

5. The selected breeding device for Micropterus salmoides fry according to claim 1, characterized in that, The re-feeding device successively includes a base (20), a feeding hopper (22), a trumpet pipe A (19), a pump pipe (18), a trumpet pipe B (17), a long pipe (16) and a trumpet mouth (15) from bottom to top. Among them, the part above the feeding hopper (22) is embedded in the breeding frame (2); the base (20) and the trumpet pipe A (19) are supported and connected by at least two small columns to form a water inlet slit (21); the lower edge of the feeding hopper (22) fits with the upper edge of the base (20); a ring piece (23) is provided between the trumpet pipe B (17) and the long pipe (16), and a lamp tube (24) is provided on the ring piece (23).

6. The Micropterus salmoides fry breeding device according to claim 5, wherein, A spiral piece (25) is provided in the pump pipe (18), a motor is provided in the base (20), and a magnetic bar runs through the base (20) and the trumpet pipe A (19) and is driven by the motor.

7. The Micropterus salmoides fry breeding device according to claim 1, wherein Waist shaft grooves (32) are evenly arranged on the ridge of the cement pond (26); the net cage frame (27) includes two semi-cylindrical structures formed by frame rods (29) and a frame waist (30) that is recessed inward between the two. A waist shaft (31) is provided in the middle of the frame waist (30) at the bottom surface, and the waist shaft (31) is rotatably connected to the waist shaft groove (32).

8. The Micropterus salmoides fry breeding device according to claim 1, wherein The net cage (28) includes a main rein (33) and sub-reins. Among them, the sub-reins are interlaced with each other to form a semi-cylindrical net structure, and small holes are left on the sub-reins at the edge for the main rein (33) to pass through; the main rein (33) surrounds the frame waist (30) once to fix the net cage (28) on the net cage frame (27).

9. Application of the device according to any one of claims 1-8 in the artificial feed domestication and cultivation and fry screening of Micropterus salmoides.

10. The application according to claim 9, wherein The application includes the following steps: S1. Stock the Micropterus salmoides fry in each culture frame (2). In the early stage of domestication, the culture frame (2) consists only of an upper frame and a lower frame. In the later stage of domestication, a fish sieve is installed on the culture frame (2) to form a spherical net, which rotates to facilitate the fry to swim out and prevent the large fry from eating the small fry; and it also plays a role in sorting the fry. The swam-out small fry are collected by a net cage (28). S2. Use a method combining manual feeding and a re-feeding device to feed artificial feed into the culture frame (2). When using the re-feeding device, start the motor in the base (20), drive the magnetic rods in the base (20) and the horn tube A (19), drive the water body in the horn tube A (19) to rotate. The rotating water body is lifted by the spiral blades (25) in the pump tube (18), so that the water body at the bottom of the feeding funnel (22) continuously sprays out from the bell mouth (15); when feeding, use the manual feeding method to feed the feed above the re-feeding device. When the feed falls, part of the feed is eaten by the fry, and the uneaten part is collected and lifted by the feeding funnel (22), and then sprays out from the bell mouth (15), and repeats until it is eaten by the fry; when feeding, turn on the lamp tube (24) to make the feed particles reflect light and be easily eaten by the fry. S3. After feeding is completed, turn on the motor A (7) to start the rotating shaft (5), and the culture frame (2) moves up so that the upper frame is higher than the water surface, increasing the fry density. Under the condition of high density, the activity of the fry increases, which is convenient for digestion. At the same time, the space between the fry is limited and the mutual attack behavior decreases; in addition, manually pull up the culture frame (2) through the pull ring (4) to adjust the fry density in individual culture frames (2). S4. After successfully domesticating the Micropterus salmoides fry with artificial feed through steps S1 - S3, collect the fry with a net cage (28). Pass the main reins (33) of the net cage (28) through the small holes of the secondary reins and then wind around the frame waist (30) for one week to fix the net cage (28) on the net cage frame (27), and then snap the waist shaft (31) into the waist shaft groove (32) to facilitate the rotation of the net cage (28) in the cement pond (26); during cultivation, generally only set the net cage (28) on the net cage frame (27) under the water surface. After cultivating for a period of time, the water permeability of the net cage (28) becomes poor, then set the net cage (28) on the net cage frame (27) above the water surface, rotate the net cage frame (27) to make the clean net cage (28) turn under the water surface, and the fry will enter the new net cage (28) with the water, and remove the old net cage (28); after cyclic operation until the required fish species specifications are cultivated.

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